Microsoft Distributed Cache (code name Velocity) Admin Tool

The Microsoft Distributed Cache (code name Velocity) Admin Tool help you manage the Microsoft Distributed Cache.

Link: http://mdcadmintool.codeplex.com/

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WCF Service Debuger Visualizers Tool

Visual Studio 2005 shipped with a very nice feature called debugger visualizers. In accordance with their names, debugger visualizers allow you to visually view useful information about objects during debug.
WCF debugger visualizers Tool contain number of visualizers that shows different views of your WCF Service Host.

Link: http://www.codeplex.com/WCFVisualizer

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CAB & SCSF Visualization Tool

This Visualizations show the WorkItem hierarchy, Worksapce, SmartPart, Command, Events, State and Items.

Link: http://www.codeplex.com/WorkItemVisualizer